Although harder to clean up than many others, at least the velocities are tip-top, and they meter well: BL-C(2) or its bulk form(surplus) WC-846 are what I use in the .223, 308, and .22-250. The accuracy is excellent! I have used WIN' 748 as well, but actually prefer the bulk WC-846 because of its much lower cost. In the .223 Handi' I've had good results with Rem' and Win' primers, in either brand of brass as well.
I've loaded IMR 3031 in the .223 and found it very difficult to work with out of a measure, necessitating the weighing of every charge. (I use an RCBS measure and scale). I only keep '3031' around any longer because of its versatility. It's not a powder that I'd look for.
I wouldn't go back to any 'stick' powder in a narrow-necked .223. Yes, H322 is a finer-grained stick powder that meters rather well, but I've not tried it -- and I, for my needs, see no need to after using the BL-C(2) variants so well. H322 has an excellent reputation for accuracy.
I've recently used the Hornady 50 gr' spire points for ground hogs and have had great results with them.
Take care.
SS'